Nixie, Sirena and Lyla are mucking around with Ritas mermaid potions. Nixie leaves one open while she answers the door after Rita leaves. Which is David and Evie delivering her fish. Evie looks for the bathroom while Poseidon steps on mermaid powder and potions together. He leaves the grotto and forms a connection with Evie. He turns into a second Evie. Sirena, Lyla, Nixie and Zac must hide Poseidon Evie from Real Evie before they come into contact.